Computer Software What is software? Types of software Types of system utilities
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Nov 01, 2014
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Computer Software
What is software?
Types of software
Types of system utilities
Objectives
• Understand well the software names and classifications, functions and roles.
• Understand the reason why the operating system is necessary.
What is computer software?
• Set of programs aimed at efficient use and control of different types of resources.
• Helps users to make effective use of the hardware functions.
User
Application SoftwareWord processing, spreadsheet, database, graphics, etc
Device drivers System Software Utility programs
Hardware(computer plus peripheral devices)
Types of Software
1. Application software:
- perform useful work on general-purpose tasks (word, spreadsheet, adobe photo shop and etc…)
BACK
Types of Software
2. System software
- enables the application software to interact with computer.
- Helps the computer manage its internal and external resources.
Operating System
• Acts as a bridge between the application software and the hardware is the operating system (OS).
OS
Control program
General-purpose language processors
Service programs
Purpose
1. Efficient use of the resources- Using resources without relying on
humans.2. Consecutive job processing- Eliminating as much as human
intervention as possible.3. Multi-programming-simultaneously processing multiple jobs
with the same processor NEXT
The operating time of a job processed in a computer can be divided into the
following:• Time during which the data to be
processed is entered.• Time during which calculations
and other processes are performed using the processor.
• Time during which process results are outputted.
BACK
Purpose
4. Reduction of the response time- e.g. Online transaction
processing system5. Improve of reliability
What is a user interface?
The part of the operating system that enables the user to interact with it
Two types of user interfaces:
Command-line- Requires the user to type keywords or commands to enter data or give instructions
Graphical user interface (GUI)- Uses a graphics environment made up of objects, icons, buttons and menus; User is able to use a pointing device (mouse, joy stick, etc) or keyboard to enter data and issue commands
Types of User interfaces
Command-line
Graphical user interface
BACK
What are system utilities? Programs that help the operating system manage the computer system’s resources
Types of utilities: File management
File finders
Backup utilities
Antivirus software
File compression
Disk scanning
File defragmentationBACK
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What are file management utilities?
Known as a file manager
Enables the user to perform various tasks with files, folders, and directories on storage devices
Tasks include: Creating folders
Saving, deleting, copying and moving files and folders
Examining the contents of files
Launching application programs
BACK
What are file finders? A program that enables the user to find files on a storage device
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What are backup utilities?
A program that enables the user to copy data from the hard disk to another storage medium
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What is antivirus software?
A program that protects the computer from computer viruses
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What is a file compression utility?
A program that reduces the size of a file
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What is a disk scanning utility?
A program that detects and fixes physical and logical problems on storage devices
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What is a file defragmentation utility?
A program that moves data on a storage device to improve performance
BACK
Research the following topics:
1.Types of Software. Name two functions of each.
2.Give five purpose of an operating system.
3.Give five types of system utilities?
CS/IT 110
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